The current work is based on the article abstracts of the Cord-19 corpus (Version 93: 21-06-2021), which is made available by Semantic Scholar and the Allen Institute for AI. For details on the Cord-19 corpus plese see [1]}. The dataset contains coronavirus-related research papers from PubMed, bioRxiv, and medRxiv, as well as articles from a repository of more than two hundred thousand papers maintained by the World Health Organization.
As this work focuses on COVID-19, abstracts uploaded before December 31, 2019 have been filtered out, since mainly concerning SARS and MERS. The resulting dataset contains 398818 abstracts.
Details about the preprocessing stage can be found in Appendix .
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